Home / 428,291.20-591,330.54-382,823.47

Finding the Fourth Proportional to 428,291.20, 591,330.54 and 382,823.47

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Solution

The fourth proportional to 428,291.20, 591,330.54 and 382,823.47 is: 528,554.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,291.20 : 591,330.54 = 382,823.47 : x
  2. Step 2: Convert to fraction form
    428,291.20/591,330.54 = 382,823.47/x
  3. Step 3: Cross multiply
    428,291.20x = 591,330.54 × 382,823.47
  4. Step 4: Simplify right side
    428,291.20x = 226,375,209,239.77
  5. Step 5: Solve for x
    x = 226,375,209,239.77/428,291.20
  6. Step 6: Final answer
    x = 528,554.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.